Power-transmitting mechanism.



I A. E: NEWTON.

POWMRANSMITTING MECHANISM.

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"PATENTED AUG. 4, 1908.

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APPLICATION FILED JULY 5,1993.

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Y PATBNTED AUG.4, 1908..

A. E. NEWTON. 7 POWER TRANSMITTING MECHANISM.

APPLICATION FILED JULY 7,1903.

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APPLICATION FILED JULY '1, 1903- 12.27. 77wi'on. A?) his fltforngyo, W F64% UNITED STATES PATENT OFFICE.

' ALBERT E. xnw'rox, or WORCESTER,MASSACHUSETTS.

POWER-TRANSLIITTING MECHANISM.

' Application filed July 7, 1903.

T all iclzom it may concern:

Be it known that I, ALBERT E. NEWTOX, a citizen of th United States,residing at \Yorcester, in the county of \Vorcester and State ofMassachusetts, have invented a new and useful Power-TrausmittingMechanism, of which the following is a specification.

This invention relates to a power transmitting mechanism.

The object of this invention is to improve the construction of radialdrills and the like, and the improvements especially relate to aconstruction by which the gearing used for driving and feeding thedrillspindle can be conveniently arranged and accurately andeconomically manufactured.

To this end the invention consists of the parts and combinationshereinafter described and claimed.

Referring to the accompanying five sh ets of drawings forming part ofthis application for patent, Figure 1 is a front elevation of the radialarm of a radial drill and the parts mounted thereon, showing how certainfeatures of the invention maybe applied thereto. Fig. 2 is a rearelevation of the drill head. Fig. 3 is a side detail view of thereversing gearing looking at the same from the position indicated by thearrow 3 in Fig. 2. Fig. 4 15 a sectional view thereof taken on the plane4-4 of Fig. 3. Fig. 5 is a sectional view through the upright drivingshaft and back gearing therefor. Fig. 6 is a detail View of a frictionwhich may be used thereon. Fig. 7 is a detail view of a yoke orarm forcontroh ling the same. Fig. 8- is a plan view showing an arrangement ofthe centers of the feeding mechanism. Fig. 9 is a sectional view takenon the planes 99 of Fig. 8, illustrating the construction of a feedingmechanism. Fig. 10 is a top plan view illustrating the construction ofthe framing shown for carrying the gearing which makes up the feedingmechanism, and Fig. 1] is a front view thereof.

Referring to the d rawings, and in detail. A designates the usualupright frame, fitted to slide vertically on which is a base-piece B inwhich is pivoted the radial arm C.

Fitted to slide on the radial arm C i a drill-head D.

A power shaft 10 is arranged concentrically with the pivots of theradial arm, and by means of miter gears drives a shaft 11 journaled inbrackets secured to the radial arm.

Specification of Letters Patent.

Patented Aug. 4, 1908.

Serial No. 164,569.

and said shaft passes through friction clutch hubs 13-13, which havekeys engaging said key-way. These friction clutch hubs 13-l3 are looselyfitted inside the hubs of bevel gears 14-14. The hubs of these bevelgears 1-1-14 are loosely journaled in brackets or arms projecting fromthe drill-head, and are held therein by suitable collars. Each frictionclutch hub 13 is arranged with a friction clutch in connection with itsrespective bevel gear, the details of which friction are herein afterdescribed at length. Fitting looselv on said shaft 11 is a sliding hub15 which has tspered ends to engage arms projecting from the respectiveclutches. Engaging a groove cut in said hub 15 is a yoke 16 mounted on ashaft 17 fitted in lugs projecting from the bearings which carry thefriction clutch hubs 1313 and the bevel gears 14'14. The end of saidshaft 17 is slabbed and fitted t0 the same is the end of a lever 18which is mounted on a suitable pivot carried by the drill-head. By meansof this lever 18 either friction clutch can be operated so as to engageits bevel gear 14. By this construction the upright shaft hereinafterreferred to can be driven in either direction.

Engaging both bevel gears 1-fl-1 is a. bevel gear 19, which is securedon the end of a friction clutch hub 20, which is loosely journaled in a.bearing secured to the drill-head. The upper end of this hub is formedinto a cup, and loosely fitting into said cup is a friction clutch 21which is keyed to the up 1 right shaft 22. This friction clutch 21 coresists of a hub projecting from which is a. circular rib 2?. the end ofwh ch is cut off so as to be capable of radial movement.

Fitting into depressions so as to engage the fixed part of the hub andthe free end of the circular rib are two pins 21-24. The sides of thesepins are slabbed where they bear on each other- Projecting from each ofthese pins is an arm 25, each of which carries a bearing-head 26 at itsfree end.

Sliding on the upright driving shaft '22 and keyed thereto is a hub 27,the end of which is tapered and fits in between the bearingheads 26.

When the sliding hub 27 is moved down wards towards the friction, thetapered end of the same forces the arms outwardly. and thereby forcesthe circular rib radially to engage the hub of the friction clutch, sothat turn with the bevel gear 19- i the upright shaft 22 will be-lockcdto and iii This shaft 11 has a key-way cut in the same, l

The same construction of friction clutch is used between the clutchh'ubs 1313 and the bevel gears 1-1-44.

said hub. The drill spindle fits and turns in the usual feed-quill 41,which is fitted to slide up and down in a bearing formed at the lower iMounted in a bearing secured to the drill- .5 head is a hub '28 wluchhas clutch teeth '29.

The sliding hub 27 has corresponding clutch Q the drill spindle can beraised and lowered teeth 30. By sliding the hub 21 upwards,

the upright shaft '22 is locked to said hub 28. I:

may be counterbalanced by a weight 42 Keyed on the hub '20 is a pinion31, which meshes with a gear 32 mounted on the end of trained oversuitable guiding pulleys.

a back-gear shaft 33 which is journaled in a suitable bracketcarried bythe drill-head.

On the upper end of the back gear shaft 33 is arranged a pinion 34 whichengages a gear 35 keyed on the hub 28. Keyed on the top of the uprightdriving shaft .22 is a pinion 36. The construction just described formsa back-gearing.

hen the sliding hub 27 is moved down- 3 provided with a clutch -18 bywhich the worm can be connected or disconnected from the wards, thefriction is locked in place and the pinion 36 is connected to turn withthe bevel i gear 19. 'hen the sliding hub 27 is raised.

the friction is disengaged, and the continued j and the clutch 48 18provided with the usual movement thereof locks the clutch teeth and 30together. position, power is transmitter. o the pinion 31. gear 32,shaft 33,. pinion 34 to gear 35. and as the gear 35 is secured to thehub 2S which is now locked to the upright shaft 22 When the parts takethis the pinion 36 will be driven through its back jj spindle can bequickly raised or lowered. By leavin the handles in their normalposition, ant by turning the feed-wheel 47, the

gear train at a relatively slow and powerful speed compared with thespeed when the power is taken directly up to the upright shaft 22.

I have found itto be a. most advantageous 1 construction to use afriction clutch when clutch is most desirable to take the heaz straindue to the increased leverage of gear nig down.

' which is the usual pinion (not shown).

part of the drill head. The feed quill 41 has a key-way out thereinfitting a key inserted in said bearing in the usual manner, so that inthe customary way. The drill spindle which is connected thereto by achain The feed quill 41 has a feed rack -13, engaging On the end of theshaft of this pinion is arranged a clutch 44 which is formed inside of aworm wheel 45. Engaging this worm-wheel is a. worm 46 mounted on ashaft. which is provided at its lower end with the usual feed wheel 47.The upper end of this shaft is power feed shaft 49. The clutch 44 isprovided with the usual operating handles 50,

operating connections 51. The details of these parts are not shown anddescribed at length, as they form no part of this present invention, andas the opera-tionof the same is well understood, and is as follows :Bypull ing out and turning the handles 50, the drilldrill-spindle can befed up or down accurately through the worm and worm-wheel. Bymanipulating the operating connections 1 51, the clutch 48 can be thrownin or out as desired, so that the drill-spindle can be fed by power ordisconnected from the power feed. The gearing and connections by whichthe said feed shaft 49 is driven forms an importaut part of thisinvention.

It is necessary to have said feed shaft so geared that it can be drivenat different speeds, so that the different feeds can be'obtaincd for thedrill.

The sliding hub 27 has a groove cut in the 5 same, and engaging the sameis a yoke 32' winch can be actuated by a handle 33 pivoted to thedrilll:ead, so that either train of I gearing can be used as desired bythe oper ator by simple manipulat'ion of said han- 1 tile 08. t

It. is also an advantageous construction to -use two arms 2525 tocooperate with the siidin taoered hub '27 as bv having the Z) I bearingpoints of said arms diametrica ly opposed, all tendency of the same tocramp or slip on the shaft 22 is eliminated.

The driving pinion 36 engages a driving gear 39, the hub of which isjournaled in a bearing formed in the upper part of the drili head. Thedrill spindle it) fits in this hub, and has the usual key engaging akeyavsy tn in manufacturing drills in large quantities, It has beenfound desirable to arrange this gearing so that it can be assembled andput together on the bench separately from the planed off to the samelevel for the brackets The bracket 56 is 56 and 57 respectively.

The

provided with two bearings 58 and 59.

. end of the feed shaft 4:9 1s journaled in the 'outer of said bearings.

An intermediate shaft 60 is journaled in the other bearing 58, and inthe bracket 57. A hub 61 is formed on the bracket 56 concentrically withthe bearing 58. Fitting on this hub is a swinging bracket 62 which has ahub 63 at its end, journaled in which is a shaft 6-1. The feed shaft 49has securedthereto a series of gears 65, 66, 67 and 68, which mesh witha series of inions 69, 70, 71 and 72 loosely fitted on the ower end ofthe shaft 60. The lower end of the shaft 60 is bored out, and fitted inthe same is a sliding shaft 73 which carries a spring-pressed key 74which projects through a slot cut in the shaft 60. Each of the pinionson said shaft 60 is rovided with a keyway into which the said key 74 canengage. The shaft 73 is provided with a handle or button 75, and with afriction 76. A in is arranged in the shaft 60 on each dividing linebetween the pinions, and the head of the key 74 is tapered as shown, sothat as the sliding shaft 73 is pulled down or pushed up, said key willride over said pins. By this construction any one of the four pinionscan be locked to the shaft 60.

A gear 77 is secured to the top of the shaft 60 and meshes with a pinion78 secured on the top of the shaft 34. On the lower end of the shaft 64are loosely arranged "two gears 79 and 80. The shaft 64 is bored out,and fitting in the same is a sliding shaft 81, which has a key 82 whichprojects out through a slot cut in the shaft 64. A handle or button isarranged on the end of the sliding shaftSl and a suitable frictiondevice 84 is provided for said slidin shaft. A pin is arranged in theslot of the shaft 64 on the dividing line between the gears 79 and 80.By sliding the shaft up or down either gear 79 or can be locked to theshaft 64. The gears 79 and 80 are meshed with the gears 52 and 53secured on the hub of the driving gear 39. By this construction power istaken to operate the feed shaft 49 through either gears 52 and 79, or 53and 80, as the case may be, to turn the shaft 64, and by pinion 7S andgear 77 to operate the shaft 60, and then by the )inion which is lockedto the sha ft 39 through its intermeshing gear to turn the feed shaft49. This "caring for driving the feed shaft is comparativelycomplicated. It can be best assembled and put togeth r on the bench, butthe difficulty has arisen in doing this that it is hard to fit thisgearing after assembly to the drill-head. This difficulty is overcome bythe arrangement of brackets before described. After this gearing isassembled on the bench, the brackets 56 and 57 are secured on theirrespective planing spots, only one alinement being neces ary. and thatis to get the end of the feed shaft 49 properly in its clutch-head.After this has been done and said brackets secured in place,'theswinging bracket 62 is turned and i set so that the gears 79 and 80 willproperly mesh with the gears 52 and 53. The swinging bracket 62 ispreferably split, and 1s pror sition.

vided with a tightening bolt 35 by which the same can be tightly clam)ed in adjusted o- A pin 86 is usualfy driven throng 1 a. projectingwingon said bracket 62 to lock the swinging bracket additionally to thebracket 56 after the same has been adjusted in position. the hole forthe )in being drilled after the gears are properfy meshed. B thisarrangemen this feeding gearing whic is properly propv tioned for e' i1tdifferen speeds for me d--ll spindle can lue quickly as embled on thebench, and can be rapidly and accurately put in position on thedrillhead. This is a very imporL-int point in ractice as it greatlyexpedites the manu acture.

The radia usual rack, ines ith which is the usual spiral pinion carriedby the drill head and operated by the handle 87, whereby the drill-headcan be adjusted longitudinally of the radial arm- By the constructionsbefore described, the operator has the reversing mechanism, theback-gearing mechanism, the different arrangements of the feed, and theposition of the drill longitudinally and radially at his command withourleaving his position.

The details and arrangements of parts can be worked out in other ways toaccomplish the ends cf my improvements without departing from the scopethereof expressed in the claims.

Having thus fully described my invention, what I claim and :des' 'e tosecure by Letters Patent is a 1. In drill construction, the combinationof a drill spindles power driven: hub, a shaft, means for Imnsn tingpower from the shaft to the spindle, means for gradually andfrictionally connecting the hub with the shaft while the hub is rotatedto drive the shaft directly from the hub at a high speed, meansdetachable from the shaft for tmnsmitting power from the to the shaft ata slow speed, and means for connecting said power transmitting meanspositively with the shaft.

2. In drill construction, the combination of a drill spindle. a shaft,means for transmitting power from the shaft to the drill spindle, aoowertlriven hub. a friction clutch for directly connecting said hubwith the shaft, a second bub loose on said shaft, :1 back-gear traincamnecting said hubs, whereby power may be transmitted from the firsthub to the second hub at a reduced speed, and means for simultaneouslyisconnecting said friction clutch from the ti 1 hub and connecting saidsecond hub positively with the shaft- 3. In drill construction. thecmnbination arm: C is provided with the of a drill head having twoplanin spots, two

brackets adapted. to be attached so the planmg spots. said bracketshavrrg bearings 1n alniement for a shaft, and one of said bracle &'895,102

ets having a hub concentric with said bear- I ings and a second bearing,and a swinging bracket centered on said hub.

4. A feed gearing comprising a removable bracket having a bearing, apower transmitting shaft iitted therein, a hub formed on said bracketconcentric with said bearing, a swinging bracket fitted on said hub. ashaft 'ournaled in the end of said swinging racket and gearing betweensaid shafts, whereby the parts may be assembled before the bracket ismounted in position on the machine. 7

5. A feed gearing comprising a removable bracket having a bearing, apower driven shaft "fitted therein, a hub arranged on said bracketconcentrically with said shaft, a swinging bracket fitted on said hub, ashaft journaled in said swinging bracket, gearing arranged between saidshafts and means for locking the swinging bracket in adjusted position.

' 6. A feed gearing comprising a bracket provided with bearings, a powertransmittmg shaft and a feed shaft htted m sald -bearings, a changespeed gearing between said shafts, a hub formed on said bracketconcentrically with one of said shafts,- a swinging bracket fitted onsaid hub, a shaft jouiinale'd in the end of said swinging bracket 40concentrically with said shaft 60, a swinging bracket 62 mounted on saidhub, a shaft 6- journaled in said swinging bracket, and gearing betweenthe shafts 60 and 64.

S. In a feed gearing, the combination of the bracket 56, the feed shaft49 journaled 50 a swinging bracket 62 fitted on said hub, a-

therein, the shaft journaled therein, a change speed gearing arrangedbetween said shafts 49 and 60, a hub 61 projecting from said bracketconcentrically with the shaft 60,

shaft 64 journaled in the end of said swinging bracket, gearing betweenthe shafts 60 and (H, gears 79 and S0 loosely arranged on the shaft 64,connections whereby either gear 55 may be thrown into engagement withthe shaft 64, drifing gears 52 and 53 engaging gears 79 and S0, andmeans for locking the bracket 62 in position with gears 79 and S0properly in mesh with the gears 52 and 53.

c0 9. in a feed gearing, the combination of a bracket, a feed shaftjournaled therein, a sec and shaft jonrnaled in the bracket. a changespeed gearing mounted between said shafts, a hub projecting from thebrat-kc: concen- 5 trically with the second .sl-eft. a swinging bracketfinned on said hub, a third shaft journaled in said swinging bracket,gearing be tween the second and third shafts, a plurality of gearsloosely mounted on the third shaft, cpnlnections whcreb y either of thegears on the; third shaft may be thrown into engagemen: with said shaft,driving gears engaging saidl gears on the third shaft, and means forHocking said swinging bracket in position with said gears properly inmesh.

10. In a feed gearing, the combination of a bracket, :1. .s-saftjournaled therein, a swinging bracket jo'urnaled on said first namedbracket co-ncentrically with said shaft, an

additional shaftjournaled in said swinging so -l)lacket,'ge:aringbetween said shafts, gears loosely arra-11ged on the additional shaft,connections wfnereby any of said gears may be thrown illilw'l engagementwith said shaft,

driving germs engaging said gears, and means for locking she swingingbracket in position with the properly in mesh.

'11. A fee. gearing for drills consisting of a bracket carn ying achange speed gearing, and

an adjustafnle bracket mounted thereon carrying part of said gearing andarranged so that the same can be adjusted without destroying tine meshof the gearing, wherebyall of said gearing can be assembled on thebracket anrll then said bracket can be secured to the drill head and theadjustable bracket set to meslii the change speed gearing to the gearingcaazaied by the drill head.-

12'. A fac d gearing for drills comprising a.

bracket cac' "ring a change speed gearing, an 0 bracket for drivingsaid'change s )eed gearing arrange-d so that the same can e adjusted orswung without destroying therncsh of the gearing. whereby said bracketcan be secured t0 tine drill-frame, and the adjustable bracket sea tomesh the gear to the gear which is to drive the same. 14. In aclrillingmachine, the combination of a bracket haying two integrallyformed hubs, a change speed gearing arranged between saic"; hubs, aswinging bracket con:

centrically mounted on one of said hubs, gearing can ied by saidswinging bracket, and means for locking this bracket at adjustedposition- 15. The combination of a bracket having aging bracket inadjusted posi- 105 two integrally formed hubs, a series of gears i *Intestimony whereof I have hereunto set 7 arranged between said hubs, aswinging my hand, in the presence of-t-wo subscribing I. bracket mountedon one of said hubs, means jw itnesscs. carried by said swinging bracketfor trans- 1 nut-ting power to the series of gears, and Vibnesses: meansfor locking the swinging bracket in ad \LOUIs \V. SOUTHGATE,

I V ALBERT E. NEfWTON. 'f-

